Consume Soul is a basic elementless technique that uses a fallen foe to the user's advantage.
The user absorbs a nearby soul into their body and combusts it, entering what is called a Soul State. The user's eyes glow light blue, and his/her strength grows. If the user consumes more souls while in a Soul State, the level of the Soul State increases (1 soul = Lvl 1, 2 souls = Lvl 2, etc.), increasing it's longetivity and giving the user more strength. At a level 50 Soul State, the user can access their super form. However, only the souls of the recently deceased (in the span of 5 minutes), or souls that have maintained a physical form, can be consumed. The consumed soul is sent to Oblivion, never to escape.
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Since the move requires the target to be dead, this is a D-rank technique.